Malicious PDF — malware analysis report

Static analysis result for SHA-256 e70cdb9219f9b6fd…

MALICIOUS

PDF

34.9 KB Created: 2021-06-18 03:04:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: d02ce7cfe16fcb239fa079e248ce2174 SHA-1: 8cef46035545b7d6d3901060f17f012c0c696284 SHA-256: e70cdb9219f9b6fdfa4355a8b848d5303db94f707f331435c838c37599eb26db
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains numerous embedded links, many of which are related to game hacks and cheats for popular games like Roblox and Coin Master. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external links, suggesting a link farm designed to attract traffic or distribute malicious content. The ML classifier also strongly flagged this PDF as malicious. The primary attack pattern involves directing users to external URLs that likely host malware or phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • External URI info PDF_URI
    PDF contains an external URL action
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://netcdn.co/app/431946152/how-to-make-a-badge-for-free-in-roblox-game-hack PDF link annotation
    • https://perpustakaan.itda.ac.id/repository/hacks-and-cheats-for-coin-master_GM406889139.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/is-it-possible-to-hack-robux_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/how-to-get-free-robux-without-email_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/roblox-no-download-hack_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/hack-an-account-on-roblox_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/how-to-get-free-tiktok-followers-without-downloading-apps_GM835599320.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/roblox-jailbreak-hack_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/coin-master-free-link_GM406889139.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/minecraft-handbook_GM479516143.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/coin-master-vip-hack_GM406889139.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/free-coins-coin-master-link_GM406889139.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/haktuts-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/roblox-robux-codes-2021_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/best-free-minecraft-server-hosting_GM479516143.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/coin-master-free-spins-promo-code_GM406889139.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/coin-master-hack-activegamer_GM406889139.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/coin-master-hack-without-verification-for-iphone_GM406889139.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/how-to-use-redeemed-cards-on-roblox-no-hacks-2021_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/robuxglobalcom_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003075.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3075 22432 bytes
SHA-256: b9fe00b0b3e90c1e91871cae8353b846e5f2b587b7b529d7d5622304888388ea
font_01_sfnt_off0000628d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x628D 19356 bytes
SHA-256: 0fb981661cf83875f9297025ed85bb51dffe2272c0ed874b9119979b3828a16c

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